Here is the abstract of his paper:“This paper explores the way the concept of hardware and physical prototyping can be used as an addition or extension to “traditional” prototyping methods used in HCI research. Physical prototyping
allows creating interactive hardware prototypes that are tangible but make use of digital information. This approach appears to be a next step in standard prototyping tools that can be used in research, but is also an opportunity with regard to the “everyday user”. From both viewpoints, there are however limitations to the existing platforms. These possibilities and limitations are explored by a small case study involving the Arduino platform to create musical instruments. “